package com.net.spring_security;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.springframework.security.access.SecurityMetadataSource;
import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
import org.springframework.security.access.intercept.InterceptorStatusToken;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;

public class MyFilterSecurityInterceptor extends AbstractSecurityInterceptor implements Filter{
	private  FilterInvocationSecurityMetadataSource securityMetadataSource;
	
	@Override
	public Class<? extends Object> getSecureObjectClass() {
		return FilterInvocation.class;
	}

	@Override
	public SecurityMetadataSource obtainSecurityMetadataSource() {
		return securityMetadataSource;
	}

	public void destroy() {
		
	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		FilterInvocation filter = new FilterInvocation(arg0,arg1,arg2);
		invoke(filter);
	}

	private void invoke(FilterInvocation filter) {
		InterceptorStatusToken token = super.beforeInvocation(filter);
			try {
				try {
					filter.getChain().doFilter(filter.getRequest(), filter.getResponse());
				} catch (ServletException e) {
					e.printStackTrace();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}finally{
				super.afterInvocation(token, null);
			}
	}

	public void init(FilterConfig arg0) throws ServletException {
		
	}

	public FilterInvocationSecurityMetadataSource getSecurityMetadataSource() {
		return securityMetadataSource;
	}

	public void setSecurityMetadataSource(
			FilterInvocationSecurityMetadataSource securityMetadataSource) {
		this.securityMetadataSource = securityMetadataSource;
	}

}
